Figure 2.

Mean serum retinol changes according to treatment group, Bogandé. The continuous and blue line represents the negative control group of 8 schools,
where the pupils received only the regular school lunch during the 2003–04 school
year. The dashed green line represents the positive control group of 8 schools, where
the pupils received a single VA capsule (60 mg) at the end of the 2003–4 school year.
The dashed red line represents the last 8 schools where fortified RPO meals were served
to pupils from November 2003 until June 2004.